INDEX
Vallez rotary filter, 303 Valve materials, pumps, 125
motions, pumps, 123 Vanadinite, treatment of, 885 Vanadium, analytical methods, 888
compounds of, 886
concentration of, 886
extraction of, 884
ferroalloy, 887
metallic, 887
occurrence, 883
uses of, 887 van der Waals' constants, 190
equation, 144, 765 Vapor-composition curve, 622 Vapor pressure, curves, 609, 610, 618, 621 defined, 607
dependent on form of liquid surface, 614 measurement of, B12 of mixed liquids, 614, 617 of non miscible liquids, 616
water, in air, 681 Velocity diagram (pumps), 115 Velocity of reaction, 750 Vezin samplers, 570
size weight ratio for, 574 Vibrating screens, 248 Vinegar, production of, 602 Vinous fermentation, 599 Viscosity pipette for glue, 849 Volt, definition of, 731 Voltage due to segregation, 737 to solution pressure, 737 Volume changes of clays, testing, 482 Volume, table of measures, 986 Voluminometer, Schurecht, 482
W
Waals', van der, constants, 190
equation 144, 765 Wanner pyrometer, 446-448 Washing, counter-current, 286, 354
in filter presses, 300 Waste, disposal at plants, 975
gases, temperature of, 13 Water, apparatus for distilling, 375
in dust settlement, 312
latent heat of freezing of, 655
in multiple effect evaporation, 367
required in mortar, 958
shrinkage, in clays, 494
vapor in air, 681 Water-gas manufacture, 750 Waterpower, 69, 70, 71, 72
cost of development, 73 Waterproofing, by electrolysis, 290
principles of, 784
Water-softening apparatus, Booth/ 278 Water-softening methods, 18 Wedge furnace, 819 Weighting, separation by, 287
use of adsorbents in, 287 Wet screening with trommels, 254 Wetherill magnetic separator, 336 Wheatstone bridge, use of, 464 Whisking, 563 White lead, 933 Wiard, E. S., 221, 261, 323 Wien's law, 444 Wilfley table, 333 Wilhelm, R. M., 409 Windows, in pyrometry, 456 Wiring, allowable sizes, 55
specifications, 55
thermocouples, 434, 435
weights required, 56 Wood, destructive distillation of, 647
for fuel, 39, 41
ultimate strength, 936
working stresses, safe, 937 Wooden frame buildings, 968 Wool scouring wastes, concentrating, 384
X
Xenon, discovery of, 912 occurrence, 924 separation, 924 spectrum of, 925
Yaryan evaporator, 372, 373 Yeast, 592
disposition of, 598 Yelinek evaporator, 370, 372
Zaremba evaporator, 372
Zeolites, 18
Zinc, chloride, concentrating, 385
distillation of, 793
electrolytic refining, 745, 802
electrotherniic smelting, 800
furnace design, 796
hydrometallurgy of, 801
metallurgy of, 793
oxidation-reduction behavior, 702
paints, 933
reduction tempcnituro of, 793, 794
retort, 796
specifications for, 930 Zinc-lead smelting, 799 Zirconia refractories, 515 Zymase, 587